Black dots -> compressions (C,c,+,U,u)
White dots -> dilatations (D,d,-)
Green dot  -> T-axis
Red dot    -> P-axis

  sta  chan net loc pol a/m   azi   dist author    irsta
  PINNC BHZ  ND  00  -   a 237.01   2.62 ISC       PINNC
  PINNC HHZ  ND  00  -   a 237.01   2.62 ISC       PINNC
  OUENC HHZ  ND  00  -   a 245.78   3.02 ISC       OUENC
  OUENC BHZ  ND  00  -   a 245.78   3.02 ISC       OUENC
  ONTNC HHZ  ND  00  -   a 249.96   3.32 ISC       ONTNC
  ONTNC BHZ  ND  00  -   a 249.96   3.32 ISC       ONTNC
  NOUC  BHZ   G  00  -   a 254.03   3.39 ISC       NOUC 
  CMSA  BHZ  AU  --  -   a 239.50  23.90 ISC       CMSA 
  QLP   BHZ  AU  --  -   a 252.09  23.98 ISC       QLP  
  OOD   BHZ  AU  --  +   a 251.20  31.68 ISC       OOD  
  AS31  BHZ  AU  --  +   a 258.90  33.24 ISC       AS31 
  WRKA  BHZ  AU  --  +   a 256.12  38.28 ISC       WRKA 
  FORT  BHZ  AU  --  +   a 246.91  38.55 ISC       FORT 
  FITZ  BHZ  AU  --  -   a 266.29  41.63 ISC       FITZ 
  MEEK  BHZ  AU  --  -   a 252.91  46.88 ISC       MEEK 
  BLDU  BHZ  AU  --  +   a 247.41  48.31 ISC       BLDU 
  CASY  BHZ  IU  10  -   a 204.06  58.56 ISC       CASY 
  BYRD  BHZ  YT  --  -   a 169.61  65.94 ISC       BYA  
  KMI   ???  IR      c     301.96  79.77 BJI       KMI  
  VNA3  BHZ  AW  --  -   a 180.17  87.81 ISC       VNA3 
  BEK   HHZ  NN  --  +   a  46.26  88.95 ISC       BEKR 

sta    - Station code (FDSN)
chan   - channel code
net    - Network code (FDSN)
loc    - Location code (FDSN)
pol    - Polarity
a/m    - Automatic or manual pick
azi    - Event to station azimuth (in degrees)
dist   - Event to station distance (in degrees)
author - Author of the polarity
irsta  - International registry station code